A cable angle exceedance detection arrangement is provided. The cable angle exceedance detection arrangement may include a housing having an aperture extending therethrough defining an axis, the aperture being configured to allow a cable to extend through the housing from a first end of the housing, wherein the cable is aligned with the axis, to a second end of the housing. The cable angle exceedance detection arrangement may include a detection member coupled to the housing and configured to be contacted by the cable when a fleet angle defined between the axis and the cable at the second end of the housing exceeds a selected value.

A cable angle exceedance detection arrangement is provided. The cable angle exceedance detection arrangement may include a housing having an aperture extending therethrough defining an axis, the aperture being configured to allow a cable to extend through the housing from a first end of the housing, wherein the cable is aligned with the axis, to a second end of the housing. The cable angle exceedance detection arrangement may include a detection member coupled to the housing and configured to be contacted by the cable when a fleet angle defined between the axis and the cable at the second end of the housing exceeds a selected value.

The present disclosure provides an appliance for towing compact loads (e.g., logs), and include an auxiliary winch provided in combination with a main winch on a tractor without the need for separate powering means or the need to transport said auxiliary winch to the area adjacent to the load (away from the main winch/tractor.) The appliance may be provided by upgrading an existing tractor winch by, for example, attaching the auxiliary winch to a casing of the main winch, or to the ground adjacent the tractor with the main winch. The auxiliary winch may be furnished with a driving means powered by disposable powering means on the tractor that may include auxiliary pulley block(s) with an accompanying accessory to provide attachment thereof to the terrain, with each pulley block suitable for guiding an auxiliary cable in the area outside of the line between the main winch and the load.

The present disclosure provides an appliance for towing compact loads (e.g., logs), and include an auxiliary winch provided in combination with a main winch on a tractor without the need for separate powering means or the need to transport said auxiliary winch to the area adjacent to the load (away from the main winch/tractor.) The appliance may be provided by upgrading an existing tractor winch by, for example, attaching the auxiliary winch to a casing of the main winch, or to the ground adjacent the tractor with the main winch. The auxiliary winch may be furnished with a driving means powered by disposable powering means on the tractor that may include auxiliary pulley block(s) with an accompanying accessory to provide attachment thereof to the terrain, with each pulley block suitable for guiding an auxiliary cable in the area outside of the line between the main winch and the load.

Provided is a wire rope flaw detector according to the present invention includes a magnetizer configured to form a magnetic path in a predetermined segment of a wire rope, a magnetic sensor configured to detect a leakage magnetic flux generated from the wire rope, and a protective cover configured to prevent the wire rope from being brought into contact with the magnetic sensor. The wire rope flaw detector further includes a magnetic sensor protecting member configured to prevent the protective cover from being brought into contact with an upper face of the magnetic sensor so as to prevent application of a pressure equal to or larger than a predetermined pressure to the magnetic sensor.

Provided is a wire rope flaw detector according to the present invention includes a magnetizer configured to form a magnetic path in a predetermined segment of a wire rope, a magnetic sensor configured to detect a leakage magnetic flux generated from the wire rope, and a protective cover configured to prevent the wire rope from being brought into contact with the magnetic sensor. The wire rope flaw detector further includes a magnetic sensor protecting member configured to prevent the protective cover from being brought into contact with an upper face of the magnetic sensor so as to prevent application of a pressure equal to or larger than a predetermined pressure to the magnetic sensor.

A method for controlling lifting of a hanging load using a lifting winch integrating a drum on which a lifting rope is wound coupled to the load, includes measuring a mass parameter and a lifting speed representative of a mass and of a displacement speed of the load and supervising an emergency stop which, once activated, shuts off the lifting winch. The method also includes, during an ascending of the load, comparing the lifting speed with a low threshold and a high threshold which vary according to the mass parameter, and monitoring lifting in an optimized mode in which the lifting speed when ascending is authorized below the high threshold and forbidden above the high threshold, and if the emergency stop is activated during an ascending and while the lifting speed is higher than the low threshold then an alarm is activated.

A method for controlling lifting of a hanging load using a lifting winch integrating a drum on which a lifting rope is wound coupled to the load, includes measuring a mass parameter and a lifting speed representative of a mass and of a displacement speed of the load and supervising an emergency stop which, once activated, shuts off the lifting winch. The method also includes, during an ascending of the load, comparing the lifting speed with a low threshold and a high threshold which vary according to the mass parameter, and monitoring lifting in an optimized mode in which the lifting speed when ascending is authorized below the high threshold and forbidden above the high threshold, and if the emergency stop is activated during an ascending and while the lifting speed is higher than the low threshold then an alarm is activated.

A windlass system and method in which an inertial force resulting from an abrupt removal of primary operating power from a primary source of power during a lifting operation being carried out by a windlass of the windlass system is attenuated to reduce load forces generated by the inertial force.

A hoist system having a drum primarily self-contained within a batten, for raising and lowering lighting, sound equipment, curtains and the like, often in a performance environment. The compact system is highly scalable to a variety of spaces and applications, including school and public theaters and concert halls, as well as some homes, private business, etc. The hoist system may be adapted with safety mechanisms including an overspeed detector, which may comprise a centrifugal detection mechanism coupled to an elongate member of the system; dampening means; a compact mechanism for trimming or adjusting an operative length of elongate member; stabilizing pipe shaft bearings; elongate member diverter pulley mechanisms load balancing termination points. Additional features include various alternative combination hoist implementations and orientations, and alternative incorporated attachment mechanisms for use with the hoist system.